Sunspot drawing of 1974-4-30

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https://doi.org/10.7891/e-manuscripta-97960



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1974-04-30
13:30
Hs 1304.5:5356
https://doi.org/10.7891/e-manuscripta-97960
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
54 4 J -4.0 224.8
55 3 J -8.1 201.3
2 7